Method of making washers.



No. 800,020. PATENTED SEPT. 19,1905.

A. SANG.

METHOD OF MAKING WASHERS.

APPLICATION FILED JAN.21.1904.

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wnwsssss INVENTOR UNITED STATES PATENT OFFICE.

ALFRED SANG, SEWICKLEY, PENNSYLVANIA, ASSIGNOR TO GARLAND NUT & RIVET COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORA- TION OF PENNSYLVANIA.

METHOD OF MAKING WASHERS.

Specification of Letters Patent.

Patented Sept. 19, 1905.

.To call whom it may concern.-

Be it known that LALFRED SANG,of Sewickley, Allegheny county, Pennsylvania, have invented a new and useful Method of Making Washers, of which the following is a full,

clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a sectional side elevation showing the parts in position after the upsetting operation with the gage in position. Fig. 2 is a similar view showing the hollow punch and stripper in the position after stripping off the washer. Figs. 3, 4, and 5 are perspective views of the wire, showing the several steps; and Fig. 6 is a perspective view of the washer.

My invention relates to the manufacture of washers or annular metal disks, and is designed to provide a simple and effective method by which articles of superior quality and shape can be made.

The invention consists in upsetting the end of a rod into disk form and then pushing the disk back over the rod, thereby using the rod as the male punching-die.

It also consists in using a closed die for upsetting the disk, in moving the upsetting-die and stripping the die alternately into operative position, and in the series of steps hereinafter described and claimed.

In the drawings, in which I show dies suitable for the practice of my invention, 2 represents'a rod which may be of iron or steel or other metal, and 3 a hollow die having a hole of about the diameter of the rod and against which the end of the rod is upset.

A 4 represent the gripping-dies in the rear of the die 3 and which are operated by a cam or other suitable connections.

5 is an upsetting-die which is arranged to be brought into endwise alinement with the rod and is provided with a circular recess 6, within which the washer is upset.

7 is a stop or gage by which the forward feed of the rod is regulated. This stop is moved into and out of registry with the wire by any suitable connections.

Immediately below the upsetting-die is the hollow punching-die 8, having a hole of about the size of the rod. On the base-block 9 of the die 8 are pivoted the stripping-levers 10,

the male die.

having curved hooked ends and normally held in by springs 11. In the vertical reciprocatory movement of the dies the die 8 is brought into alinement with the rod during certain steps of the operation.

In Fig. 1 I show the position of the bars after the washer portion 12 has been upset on the end of the rod, the upsetting-die 5 retracted, the stopgage 7 moved into operative position, and the rod fed forward against the gage. After these steps the stop-gage is moved out of operative position and the dies 5 and 8 are moved upwardly until the die 8 registers with the rod. The dies are then forced forwardly, and the hollow die 8 as it moves over the rod strips the washer by pushing it back over the rod, the rod serving as The position of the parts at this operation is shown in Fig. 2. The die 8 is then retracted and as it recedes the strippers 10 will pull the washer off the rod and allow it to drop into a suitable receptacle. The wire having been gripped after it was fed forward against the gage, the dies 5 and 8 are moved downwardly until the die 5 registers with the'rod, when the dies are moved forward and the projecting portion of the rod is upset within the cavity 6 to form the next washer. The die 5 is then retracted, the gage moved into position, the wire fed forwardly against it, and the steps followed out as above described.

Fig. 3 shows the wire before upsetting, Fig. 4 the wire with the washer portion 12 upset thereon, Fig. 5 shows the washer stripped backwardly over the wire or rod, and Fig. 6 shows the washer thus formed.

The advantages of my invention result from the simple and effective manner of forming and stripping the washer and also from the improved character of the washers thus formed. As the rod is upset within a closed die its shape is uniform and regular, while its hole is of course regulated by the size of the rod. The ordinary double-stroke header- The process may be used for making small square or hexagonal nuts, and I intend to cover this in my claims, and many other changes may be made in the form and arrangement of the machine Without departing from my invention.

I clain1 1. The method of making annular metal articles, consisting in upsetting the end of a rod, and then stripping the upset portion backwardly from the rod; substantially as described.

2. The method of making annular metal articles, consisting in inclosing a rod in a die With one end projecting, upsetting the projecting end of the rod against the die, feeding the rod forwardly, and then stripping the upset portion backwardly over the rod; substantially as described.

3. The method of making annular metal ALFRED SANG.

Witnesses:

F. C. HODKINSON,

ANGUS McD. TAYLOR, Jr. 

